51857152 has 18 divisors (see below), whose sum is σ = 103512248. Its totient is φ = 25928448.

The previous prime is 51857149. The next prime is 51857153. The reversal of 51857152 is 25175815.

It is a super-2 number, since 2×51857152² = 5378328427102208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51857153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101028 + ... + 101539.

Almost surely, 2^51857152 is an apocalyptic number.

It is an amenable number.

51857152 is a deficient number, since it is larger than the sum of its proper divisors (51655096).

51857152 is an equidigital number, since it uses as much as digits as its factorization.

51857152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202583 (or 202569 counting only the distinct ones).

The product of its digits is 14000, while the sum is 34.

The square root of 51857152 is about 7201.1910126034. The cubic root of 51857152 is about 372.9090190595.

The spelling of 51857152 in words is "fifty-one million, eight hundred fifty-seven thousand, one hundred fifty-two".